TW201406481A - Modular rolling mill - Google Patents

Abstract

A modular rolling mill has a mill pass ling along which products are rolled in a rolling direction. The rolling mill comprises first gear units arranged along a first line parallel to the mill pass mill line. Each first gear unit is driven individually by a motor and has a pair of mechanically interconnected first shafts. Second gear units are arranged along a second line between and parallel to both the first line and the mill pass line. Each second gear unit has a pair of mechanically interconnected second shafts. Rolling units are arranged in succession along the mill pass line. Each rolling unit is driven by an input shaft and has a pair of mechanically interconnected roll shafts carrying work rolls. First couplings connect the first shafts of each first gear unit to second shafts of two successive gear units, and second couplings releasably connect the second shafts of the second gear units to the input shafts of two successive rolling units. At least some of the first couplings comprise clutches that may be selectively disengaged to accommodate removal of selected rolling units from the pass line.

Description

Modular roll mill

This application is a continuation of the portion of U.S. Patent Application Serial No. 12/797,656, filed on Jun. 6, 2010, the entire content of which is hereby incorporated by reference.

The present invention relates generally to a rolling mill, and more particularly to the setting of an improved modular forming mill for rolling long strips such as rods, rods, and the like.

Referring first to FIG 5A, known modular rolling mill comprises a forming sequentially disposed in a plurality of rolling mill roll R on the cell line P is described by U.S. Patent No.5,595,083 has a break in Seoul (Shor _e) Type of study _{1 -} R ₅ , the product is rolled along the rolling direction indicated by arrow 10. The gear units A ₁ -A _{4 are} arranged along a line L parallel to the factory through the line P. The gear unit is an individual driving motor M ₁ -M ₄ and relative to the roll biasing unit toward the rolling direction. A continuous drive train is provided by connecting each gear unit to two successive rolling units.

Typically, when a smaller size products such as rolled bars having a diameter of 2.0-6.5mm, all roll unit R ₁ -R ₅ is used, a high molding rate to 120m / s and the tonnage rating of 70-90tons / hr. In this case the power, all the rolling mill by the motor M ₁ -M ₄ provided by connecting each unit to the action of the gear drive train consecutive two successive rolling units provided by the benefit. However, when a larger product size is rolled at a lower speed and at a higher tonnage of 150 tons per hr, one or more of the rolling units at the exit end of the rolling mill are typically removed from the passing line. If the two rolling units are removed, as shown in FIG. 5B, and finally reached a motor M ₄ connected off from a continuous drive wheel train, thus due to the higher tonnage rating of the power generation of the increasing demand for a time point The power that can be used to drive the rolling mill is reduced. In order to compensate for this lack of power, the rolling mill is equipped with a larger motor, which undesirably increases the overall cost of the rolling mill.

In the above rolling mill, each of the rolling units R _{1 -} R ₅ includes two opposing inclined roller pairs. This design is unique to the modular rolling mill concept and is not suitable for use in other rolling positions, such as the forming roll mill after the type described in U.S. Patent No. 5,325,697, the entire disclosure of which is incorporated herein by reference.

Embodiments of the present invention relate to the provision of a modular forming roll mill driven by a plurality of motors that continuously drive the train wheel using one of all of the total power, regardless of the number of rolling units at any given time.

Embodiments of the present invention are also directed to the provision of a modular forming roll mill wherein the same rolling unit has a single pair of work rolls on a tilting axis, and wherein the rolling unit can be driven from the opposite side, along with The work rolls are relatively inclined along the rolling mill by the interaction of the lines thereby accommodating the alternating reverse direction of the rolling units.

A modular rolling mill according to an embodiment of the present invention includes a plurality of first gear units disposed along a first line parallel to a line passing through a rolling mill. Each of the first gear reduction units can be separately driven by a motor and has a first shaft that is mechanically interconnected.

The second gear unit is disposed along a second line that is located between the first line and the pass line of the rolling mill and is parallel thereto. The second gear unit is biased with respect to the first gear unit in the rolling direction, and each of the second gear units has a pair of mechanically interconnected second shafts.

A continuous drive train is provided by connecting a first shaft of each successive first gear unit to a second shaft of two consecutive second gear units.

The rolling unit is continuously arranged along the passing line. The rolling units can be interchanged with each other along successive positions of the passing line. Each of the rolling units has a pair of work rolls carried on a mechanically interconnected inclined roll shaft driven by an input shaft. The second shaft of the second gear unit is coupled to the input shafts of the continuous rolling unit in a disengageable manner.

The coupling of the first shaft of the first gear unit to the second shaft of the second gear unit is advantageously achieved by using both a conventional coupling and a strategic positioning clutch, the conventional coupling and the strategic positioning clutch being When the other individual rolling units are removed from the passing line to accommodate different pass design and rolling strokes, they can be disengaged to interrupt the drive connection of the selected second gear unit.

When viewed in the rolling direction, the first and second shafts of the first and second gear units are advantageously driven at a gradually higher rotational speed, and the input shaft of the rolling unit is connected to each pair by gears. Roller shaft The size of the wheel is selected to achieve a percentage increase in speed, which is the same for each rolling unit.

In order to achieve a non-twisted roll, the input shaft of the rolling unit protrudes from the opposite side, thereby accommodating the interactively inverted orientation of the rolling unit and its relative tilting of the roll axis along the line of the rolling mill.

12‧‧‧Modular Rolling Mill

A1-A4‧‧‧1st gear unit

L1‧‧‧1st line

P‧‧‧Rolling mill pass line

18‧‧‧Internal gear set

16‧‧‧1st axis

M1-M4‧‧‧ motor

B1-B5‧‧‧2nd gear unit

L2‧‧‧ second line

22‧‧‧ Gear Set

20‧‧‧2nd axis

24,25‧‧‧1st coupler

C1-C10‧‧‧Rolling unit

26‧‧‧Axis

26’, 26” ‧ ‧ end

32‧‧‧ Roller

34‧‧‧Working rolls

30‧‧‧ Gear Set

28a, 28b‧‧‧ bevel gear

36‧‧‧2nd coupler

Figure 1 is a plan view of a modular forming roll mill in accordance with the present invention.

Figures 2A and 2B show the reverse end views of the rolling unit.

Figure 3 is a graphical representation of the rolling train drive train.

Figure 4 is an enlarged view of the internal drive of a typical rolling unit.

Figures 5A and 5B are diagrams of prior art.

Figure 6 is a view of the modular forming roll mill of the present invention with selected rolling units removed from the rolling mill through the wire.

Figure 7 is another view showing the roll unit removed from the pass line to provide a different roll mill structure.

These and other features and additional advantages of the present invention will be described in further detail with reference to the drawings.

Referring first to Figures 1 and 3, a modular rolling mill in accordance with the present invention is designated by the numeral 12. The modular rolling mill 12 is designed to roll long products such as rods, rods, etc., along the rolling direction of the rolling mill through the line "P" in the direction indicated by the arrow 14. The rolling mill includes the first gear units A ₁ -A ₄ disposed along a first line L ₁ parallel to the roll passing line P. The first gear unit is individually driven by the internal gear set 18 to be mechanically coupled to the motors M ₁ -M _{4 of the} pair of first shafts 16.

The second gear units B ₁ -B ₅ are disposed along the second line L ₂ which is located between the first line L ₁ and the roll passing line P and which is parallel to both. Each of the second gear units has a pair of second shafts 20 that are mechanically interconnected by a gear set 22. When viewed in the rolling direction, the second gear units B ₁ -B ₅ are offset with respect to the first gear units A ₁ -A ₄ . The first couplers 24 and 25 are used to connect the first shaft 16 of each of the first gear units A ₁ -A _{4 to} the second shaft 20 of the two consecutive second gear units B ₁ -B ₅ . The coupler 24 is of the type that provides an uninterrupted connection, and the coupler 25 includes a clutch that is disengageable to interrupt the drive connection between the individual first and second shafts 16, 20.

The rolling units C ₁ - C _{10 are} continuously arranged along the line P through the rolling mill. The rolling units are interchangeable with each other. It is further clear from Fig. 4 that each of the rolling units has a shaft 26 connected to the roller shaft 32 carrying the work rolls 34 via the bevel gears 28a, 28b and a gear set 30.

2A and 2B, the roller shaft 32 can be inclined at an angle of 45°, and the one shaft 26 has end portions 26' and 26" protruding from opposite sides of the rolling unit housing. The second coupling 36 is used to connect the second. The second shaft 20 of the gear units B ₁ -B _{5 to} the shaft 26 of two consecutive rolling units C. The direction of the rolling unit C can be alternately reversed along the rolling line through the line P, as shown in Figures 2A and 2B. The interaction required to accommodate the roller shaft for twisting free rolling of the product is reversed and accommodates the need for right-handed and left-handed rolling mills.

The inner gear set 18 of the first gear unit A ₁ -A ₄ is sized to drive the shaft 16 at a progressively higher rotational speed when viewed in the rolling direction. Likewise, when viewed toward the rolling direction again, and the second gear unit B ₁ -B ₅ gear train 22 of the set of dimensions as to progressively higher rotational speed of the drive shaft 18 size.

Roll means C ₁ -C ₁₀ of bevel gears 28a, 28b of the line size as a percentage speed increase provided, which are the same for each roll unit. When the opposite relationship to the rolling unit is shown as shown in Figs. 2A and 2B, this allows the rolling units to be interchanged with each other along the line passing through the line P, and then with the least residual rolling unit. The number is used to operate the rolling mill.

It should be mentioned that due to the continuous drive configuration provided by the first and second gear units A ₁ -A ₄ and B ₁ -B ₅ , all of the motors M ₁ -M ₄ can be used to operate the rolling mill, and The number of rolling units C used is independent. Thus, for example, as shown in FIG. 1 and FIG. 3, when the small roller size molded product, all of the motor M ₁ -M ₄ and can be mechanically coupled to all of the rolling units C ₁ -C _10. The larger product size can be rolled by removing the selected rolling unit from the rolling mill through line P. In this case, it is shown in Fig. 6, in which although the rolling units C ₁ - C ₁₀ have been moved away from the rolling mill pass line, all of the motors M _{1 -} M ₄ are maintained to be joined to the remaining action of rolling. unit.

When the clutch 25 is disengaged, as shown in Fig. 7, the rolling units C ₃ , C ₄ and C ₇ , C ₈ can be removed from the rolling mill through the line P. With this configuration, the drive order is:

M ₁ -A ₁ -B ₁ -C ₁ , C ₂

M ₂ -A ₂ -B ₃ -C ₅ , C ₆

M ₃ -A ₃ -B ₃ -C ₅ , C ₆

M ₄ -A ₄ -B ₅ -C ₉ , C ₁₀

Again, all motors can be used (although even M ₂ or M ₃ may be turned off if only one motor is required for the rolling units C ₅ , C ₆ and the rolling load).

This type of roll mill structure incorporates elasticity to accommodate different pass designs, especially for larger diameter products above 10 mm. When the lower temperature thermomechanical rolling, a cooling unit (not shown) may be positioned along a line through the withdrawal of the roll unit (C ₃ and C ₄ or C ₇ and C ₈₎ is removed In space.

Although the embodiments of the present invention have been disclosed by way of example, it is understood that the invention may be modified, added, and modified without departing from the spirit and scope of the invention and the equivalents thereof. The scope is defined by the scope of the following patent application.

A1-A4‧‧‧1st gear unit

B1-B5‧‧‧2nd gear unit

C1-C10‧‧‧Rolling unit

M1-M4‧‧‧ motor

P‧‧‧Rolling mill pass line

12‧‧‧Modular Rolling Mill

24, 25‧‧‧ end

36‧‧‧2nd coupler

Claims (11)

A modular rolling mill having a rolling mill passing line along which a product is rolled in a rolling direction, the rolling mill comprising: a plurality of first gear units, parallel to a line passing through the rolling mill a first line arrangement, each of the first gear units being separately driven by a motor and having a pair of mechanically interconnected first shafts; a plurality of second gear units passing along the first line and the rolling mill a second line arrangement between the lines and parallel thereto, each of the second gear units having a pair of mechanically interconnected second shafts; a plurality of rolling units continuously disposed along the line of passage, each A rolling unit is driven by an input shaft and has a pair of roller shafts carrying the work rolls and mechanically interconnected; a first coupling means for providing the first shaft and two consecutive portions of each of the first gear units a drive connection between the second shaft of the gear unit, at least some of the first coupling means including a clutch that is disengageable to interrupt driving between the first and second shafts Connection; and second coupling means for releasable connection The two second shaft to the second gear unit input shaft of the gear unit continuously. A modular rolling mill according to claim 1, wherein the rolling units are interchangeable with each other at successive positions along the working line of the rolling mill. The modular rolling mill of claim 1, wherein the first shaft of the first gear unit is gradually driven at a higher rotational speed when viewed in the rolling direction. The modular rolling mill of claim 3, wherein the second shaft of the second gear unit is gradually driven at a higher rotational speed when viewed in the rolling direction. The modular rolling mill of claim 1, wherein the input shaft of each of the rolling units is connected to each pair of mechanically interconnected rollers via a gear, the gear being sized to achieve a percentage speed Increase, this speed increase is the same for each rolling unit. The modular rolling mill of claim 2, wherein the input shaft of each rolling unit is connected to each pair of mechanically interconnected rollers via a gear, the gear being sized to achieve a percentage The speed increases and this speed increase is the same for each rolling unit. A modular rolling mill according to claim 3, wherein the input shaft of each of the rolling units is connected via gears to pairs of mechanically interconnected rollers, the gear being sized to achieve a percentage The speed increases and this speed increase is the same for each rolling unit. A modular rolling mill according to claim 4, wherein the input shaft of each of the rolling units is connected via gears to each pair of mechanically interconnected rollers, the gear being sized to achieve a percentage The speed increases and this speed increase is the same for each rolling unit. The modular rolling mill of claim 1, wherein the rolling unit is similarly configured with a slanted roller shaft, and wherein the input shaft of the rolling unit protrudes from the opposite side, thereby accommodating the roller The interactive orientation of the rolling unit is reversed and its equal roll axis is relatively inclined along the line of the rolling mill. A modular rolling mill having a rolling mill passing line along which a product is rolled in a rolling direction, the rolling mill comprising: a plurality of first gear units, parallel to a line passing through the rolling mill a first line arrangement, each of the first gear units being separately driven by a motor and having a pair of mechanically interconnected first shafts; a plurality of second gear units passing along the first line and the rolling mill a second line arrangement between the lines and parallel thereto, each of the second gear units having a pair of mechanically interconnected second axes; a plurality of identical rolling units continuously disposed along the line Each of the rolling units is driven by an input shaft that is coupled via a gear to a pair of inclined rollers that carry a work roll, the gear being sized to achieve a percentage speed increase, which is increased for each a rolling unit is the same, wherein the input shaft of the rolling unit protrudes from the opposite side, thereby accommodating the alternating orientation of the rolling unit and the relative inclination of the roller shaft along the rolling line of the rolling mill; 1 connection means, Providing a driving connection between the first shaft of each of the first gear units and the second shaft of two consecutive gear units, at least some of the first coupling means including a clutch, the clutch being detachable Connecting the drive connection between the first and the second shafts; and the second coupling means for releasably connecting the second shaft to the two consecutive gear units of the second gear unit Input shaft. A modular rolling mill having a rolling mill passing line along which a product is rolled in a rolling direction through a line, the rolling mill comprising: a plurality of first gear units disposed along a first line parallel to the line passing through the rolling mill, each of the first gear units being separately driven by a motor and having a pair of mechanically interconnected first shafts, wherein When viewed in the rolling direction, the first shaft of the first gear unit is gradually driven at a higher rotational speed; a plurality of second gear units are located between the first line and the pass line of the rolling mill. And a second line arrangement parallel thereto, each of the second gear units having a pair of mechanically interconnected second shafts; a plurality of rolling units interchangeable with each other at successive positions along the passage line, each The rolling unit is driven by an input shaft and has a pair of roller shafts carrying the work rolls and mechanically interconnected; a first coupling means for providing the first shaft and the two consecutive ones of each of the first gear units a drive connection between the second shaft of the gear unit, at least some of the first coupling means including a clutch that is disengageable to interrupt a drive connection between the first and the second shaft And a second coupling means for releasably connecting the second gear The element of the input shaft to the second shaft of the two successive gear unit.